Wide-range meter



Jan. 29, 1929. 1,700,692

W. TOWNSEND WIDE RANGE METER 7 Filed 001;. 25, 1926 2 Sheets-Sheet 1 INVENTOR'. William Yam "Send,

ATTORNEYS Jan. 29, 1929.

' 1,700,692 W. TOWNSEND WIDE RANGE METER Filed Oct. 25. 1926 2 Sheets-Sheet 2 gwwnto'a Will am Townsend,

Patented Jan. 29, 1929.

UNITED STATES I a 1,700,692. PATENT OFFICE. 6

WILLIAM TOWNSEND, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GONN'ERS'VILLE BLOWER 00., OF CONNERSVILLE, INDIANA, A GOBPOItA'IION OI INDIANA.

wmn anrren Application filed October 25, 1920. Serial m. 143.809.

In thattype 'of meter which is characterizedby two mating lobed rotating elements within a casing, the lobed elements do not actually contact"'with each other and there :v is therefore a certain unavoidable leakage or slippage which, during periods of low demand insufiicient-to cause any rotation of the meter elements, may pass through the ,ifneter without being measured or accounted The object of my present invention is to prdvide in connection with a meter of the described type means which will insure movement of the -meteri ng elements even though the consumption demand be so low as to be incapable of causing movement of the metering elements, the construction being such, however that the amount of gas actually passing rom the system may be ter 23 will also; be equipped with a roperly 2o accurately determined.

' The accompanying drawings illustrate my invention: Y 4

Fig. 1, is a diagrammatic elevation of a" metering system involving my improve ment, the construction being such that'the booster will be in continuous operation.

Fig. 2, a diagram of an arrangement wherein the booster will be automatically stopped and started according to the con- 80 sumption demand.

Fig. 3 is a diagrammatic elevation of a modification of my invention and Fig. 4 is a diagrammatic .eleyation 0% still another modification of my inven'tion.

In the drawings 10 indicates a lobed olement meter,- such for instance as those now commonly on the market as the product of the Qonnersville Blower Company,of Connersv lle, Indiana, such meter being alarge 4 capacit meter cginprisinga casing,two rotary l0 ed meter n elements 'rotatively and -coact1vely mounte within the casing and movable under the differential of normal consumption of the gas to be metered, said meter also comprising an inlet pipe 11, and outlet or dehvery pipe 12 and aregistering or recordlng meter 13 connected to one of theA moving meter elements.

shown in the Wilkins Patent.No."1,528,728.

. In order to cause themovable elements of meter 10 to move even though the'outflow from pixie 12 less than suflicient toproduce a 'fl'erentlal capable of causing rotation of such movable elements, I provide a proper construction of this meter is.

booster 15 which may conveniently be an ordinary lobed impeller exhauster, theelements of which are positivel driven by means of a motor 16, pulleys 1 and 18 and belt'19; The inlet sideof said booster is connected-with the outlet pipe 12 of meter 10 by means of a pipe 20 imwhich is mounted a check valve 21 opening toward the booster. Leading from the outlet side of the booster is a pipe 22 which. delivers to a small capacity meter 23 'of a non-slippage type, i'. e., a wetimeter, a diaphragm'meter, etc.

The delivery side of, the non-slippage meter 23 is connected by pipe 24 with the inlet side of meter 10.' Booster 15 may be provided'in a well known manner with a properl calibrated register or recorder 26 whic' will give an accurate indication or record of the quantity of gas,passing therethrough. -Mecalibrated register or recorder 27 w ich will give anindication of the amount of gas passing through the meter23.

In Fig. 2 the'booster motor- 16 is controlled by a relay 30 which is started and stopped by a speed controlled governor 31 mounted on the operating shaft for the register 13. Said speed controlled governor comprises a movable contact 32 contacting with terminal 33 when the speed drops below a'predeterminedpoint, said contact 32 and terminal 331 being in the control circuit 35 of the re ay.

In operation, movement of the booster 15 repasses through the meter 10 a suflicient quantity of gas'to keep itsmetering elements in movement and this gliantity is definitely measured by the in 'cators or recorders 26 and 27, either or both, and, in determining total consumption, the total in- 95 dicated by register 13 is diminished by the totalwhich is passed through the booster.

Of course, when there is no consumption demand on outlet 12 the booster reading will be equal to the main meter reading durlng the period of non-consumption.

- It will, of course, be understood that the I non-slippage meter 23 is not an absolute essential because the booster may bedriven at a uniform speed and, when so driven may beaccurately calibrated against the main meter reading. It also be understood 4 that where-the non-slippage meter 23 is used It-will the 'indicator 26 is not necessary. the nonalso be'understood that even where slippage meter 23 is omitted the booster indlcating mechanism 26 may also be omitted if the booster be run at a constant speed because, with pumps of the type indicated, they may be very accurately calibrated so that the total flow of gas induced thereby during any given period is accurately known and,therefore, the reading of meter '13 may be diminished by the known con' stant delivery of the booster thus givlng the proper consumption data.

In certain of the claims the expression metered booster is used and it will be understood that this-term is intended to include not only a structure wherein the booster is rovided with a meter such as is shown in igs. 1. and 2 but contemplates the use of an indicator such as 26 or the use of a booster accurately calibrated and run at constant speed as indicted in Fig. 4.

I claim as my invention:

1. The combination of, a gas meter of the mating lobed element type, a booster pump side of the meter and its outlet connected with the inlet side of said first mentioned booster, and a non-slippage meter in one .ward the booster. having its inlet connected to the discharge connection between the booster and first meter.

2. The combination of, a gas meter of the mating lobed element type, a metered booster pump havin its inlet connected to the discharge side 0 the meter and its outlet-connected with the inlet side of said meter;-

3. The combination of, a gas meter of the mating lobed element type, a booster pump having its inlet connected to the discharge side of'the meter and its outlet connected with the inlet side of said meter, and a nonslippage meter in one connection between the booster and the first meter.

4. The combination of, a gas meter of.

the mating'lobed element type, a metered booster pump .having its inlet connected to the discharge side of'the meter and its outlet connected with the inlet side of said meter, and a check valve arranged in the inlet line of the booster and opening to- In witness whereof I, WILLIAM TOWN- SEND, have hereunto set my hand at Chi cago, 111., this 20th day of October, A. D. one thousand nine hundred and twenty six.

WILLIAM TOWNSEND. 

